20x
Santoni Top2V In-House
5-7 Days
Rapid Prototyping Cycle
1,000 Pcs
Flexible MoQ / Style
25+
Export Nations Worldwide
Production Portfolio
Engineered Seamless Collections & Custom OEM Activewear
Every activewear silhouette is engineered directly on circular knitting cylinders, eliminating peripheral friction seams while integrating targeted thermal ventilation and graduated muscular support directly into the knit matrix.
Engineering Architecture
The Mechanics of High-Density Seamless Circular Knitting in B2B Sourcing
In modern performance activewear procurement, technical enterprise buyers are pivoting away from standard cut-and-sew operations toward single-cylinder seamless circular knitting. Founded in 2019 in Beylikdüzü, İstanbul, Overfit Seamless operates a dedicated line of 20 in-house Santoni Top2V machines (Gauge 28), establishing high dimensional fidelity without subcontracting production risks. Traditional cut-and-sew apparel joins flat fabric markers across lateral lines, creating up to 18–22% textile cutting scrap while introducing seam friction that causes skin irritation under repetitive kinetic load.
In contrast, Santoni circular knitting synthesizes the garment as a continuous three-dimensional tubular structure. Needle selection systems enable microscopic transitions across tension matrices within a single garment unit: switching from high-gauge compression support along lumbar bands to breathable jacquard mesh architectures across thoracic sweat regions. This level of micro-zoned yarn distribution removes bulky flatlock seams, elevates durability under cyclic tensile stress, and allows OEM brands to achieve superior structural integrity that resists shearing and wash degradation.
| Evaluation Parameter | In-House Seamless Circular Knitting (Santoni Top2V) | Conventional Cut-and-Sew Operations |
|---|---|---|
| Structural Seam Friction | Zero lateral side-seams; pressure-welded waistband options | Continuous overlock / flatlock seams along flanks and inseams |
| Raw Material Cutting Waste | Under 2.5% scrap through direct-to-shape circular knitting | 15% – 24% off-cut waste across pattern nesting layout markers |
| Zoned Compression Dynamics | Programmed electronically into loop tension per needle row | Requires secondary fabric inserts, taped bonding, and complex sewing |
| Prototype Development Lead Time | 5–7 Business Days via direct digital cylinder coding | 18–30 Days including manual pattern drafting and sample sewing |
| Structural Tensile Longevity | Continuous filament loops distribute stress evenly across cylinder | Stress concentrated along join threads, prone to seam burst |
Strategic Procurement
Future Sourcing & Material Engineering Trends in Activewear (2025–2030)
Procurement directors managing international supply chains face dynamic regulatory, technological, and customer shifts. Selecting the right contract manufacturing partner requires evaluating three fundamental macro trends shaping bulk OEM/ODM apparel purchasing:
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Recycled Bio-Polyamides & Polyamide 6.6
Activewear buyers are phasing out virgin polyester in favor of specialized Nylon 6.6 microfilaments and post-consumer recycled polyamides (such as ocean-bound waste polymers). Polyamide 6.6 features a compact crystalline structure, delivering 30% higher abrasion tolerance, superior moisture absorption, and an ultra-soft handfeel that elevates premium private label positioning.
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Nearshoring & Transit Velocity
Recent supply chain disruptions have underscored the operational vulnerabilities of six-week ocean lanes from East Asia to Western consumer markets. Sourcing out of Beylikdüzü, İstanbul, Türkiye offers highway transit to mainland Europe within 3 to 5 days and air-freight consolidation into North America within 48 to 72 hours, drastically reducing working capital lockup.
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Decarbonization & Clean Dye Chemistry
Global regulatory frameworks such as the EU Corporate Sustainability Due Diligence Directive (CSDDD) mandate verifiable chemical integrity. Modern yarn formulations combine OEKO-TEX Standard 100 certifications with closed-loop low-liquor dyeing vats, reducing industrial wastewater discharge and helping enterprise brands meet verified ESG benchmarks.
Enterprise Credentials
The Overfit Seamless Advantage: Built for Agile Activewear Brands
Founded in 2019, Overfit Seamless operates as an authentic manufacturing facility rather than an intermediary broker or stockist. By concentrating yarn selection, Santoni knitting, wet finishing control, and packaging under strict quality protocols in İstanbul, we deliver unmatched production transparency.
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In-House Santoni Line
20 modern Santoni Top2V high-gauge circular machines operate under internal technical supervision, guaranteeing consistent loop density and true stitch geometry across long runs.
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Rapid Prototyping (5–7 Days)
Our in-house digital technicians translate tech packs and reference garments directly into cylinder programs, slashing sample lead times to under a week.
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Low-Risk MoQ Framework
A accessible minimum run of 1,000 pieces per style—divisible across up to 2 sizes and 3 custom colourways—supports safe collection expansion without inventory strain.
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EU Customs Advantage
Located in Türkiye within the EU Customs Union framework, orders ship free of customs friction into European hubs, paired with dedicated sales desks in English, Russian, and Turkish.
Operational Intelligence
Activewear Procurement & OEM Production FAQ
Clear, direct technical answers covering minimum volumes, pattern adaptation, and international logistics for apparel sourcing executives.
Are you a direct activewear factory or a wholesale trading company?
We are a direct manufacturing enterprise. Every seamless piece is programmed, knitted, and inspected at our in-house production plant in Beylikdüzü, İstanbul. We manage yarn spinning specs, circular knitting on 20 Santoni Top2V units, and oversee continuous dyeing and finishing with our partner mills. We do not distribute off-the-shelf closeout inventory; every run is customized to order.
What is the production MoQ policy across custom collections?
Our standard minimum order quantity is 1,000 pieces per silhouette style. To give growing brands commercial agility, that 1,000-piece production run can be split across up to 2 garment sizes (such as 500 Medium / 500 Large) and across up to 3 bespoke Pantone yarn dye colors, facilitating balanced collection launches.
How long does sampling take from tech pack submission?
Physical sampling typically takes just 5 to 7 business days once yarn blends and shade targets are confirmed. Because machine programming, needle setups, and sample test loops are conducted on our own factory floor without third-party contracting, design iterations and sizing corrections are resolved quickly.
Which performance apparel silhouettes are produced in seamless knit?
We specialize in seamless tubular apparel, including high-waist squats-tested leggings, non-frontline yoga tights, impact-resistant sports bras, compressive cycling shorts, contour tops, bodysuits, and postpartum shapewear fajas engineered on 28-gauge machines.
What private label, branding, and packaging options do you offer?
We offer comprehensive private label execution: heat-transfer inner neck labels, woven silicone side tags, knitted-in jacquard brand identifiers, bespoke silicone waist grips, eco-friendly FSC-certified hangtags, and custom recycled poly packaging.
What are the freight transit times to Europe and North America?
Orders to European destinations move via overland truck or short-sea corridors in roughly 3 to 7 business days under favorable trade terms. Shipments to North American ports average 3 to 5 business days via integrated air-express logistics, or 12 to 16 days via transatlantic sea freight.
Accelerate Your Performance Activewear Production
Partner with an authentic İstanbul circular knitting factory. Connect directly with our engineering team for yarn selection, technical samples in 5–7 days, and transparent, factory-floor pricing.